<!doctype html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>Clipboard API helper page</title>
    <script>
      function tryClipboardReadText() {
        navigator.clipboard.readText()
          .then(() => document.title = 'success')
          .catch(() => document.title = 'fail');
      }
      function tryClipboardWriteText() {
        navigator.clipboard.writeText('test')
          .then(() => document.title = 'success')
          .catch(() => document.title = 'fail');
      }
    </script>
  </head>
</html>
